요청에 따라 나는 (두 개의 분리 문자 이동합니다) 이중 분배기를 개발 한 다음 . 이 스레드에서 문자열 분할과 관련된 쿼리에 가장 많이 참조되는 값을 볼 수 있습니다.
CREATE FUNCTION uft_DoubleSplitter
(
-- Add the parameters for the function here
@String VARCHAR(4000),
@Splitter1 CHAR,
@Splitter2 CHAR
)
RETURNS @Result TABLE (Id INT,MId INT,SValue VARCHAR(4000))
AS
BEGIN
DECLARE @FResult TABLE(Id INT IDENTITY(1, 1),
SValue VARCHAR(4000))
DECLARE @SResult TABLE(Id INT IDENTITY(1, 1),
MId INT,
SValue VARCHAR(4000))
SET @String = @String+@Splitter1
WHILE CHARINDEX(@Splitter1, @String) > 0
BEGIN
DECLARE @WorkingString VARCHAR(4000) = NULL
SET @WorkingString = SUBSTRING(@String, 1, CHARINDEX(@Splitter1, @String) - 1)
--Print @workingString
INSERT INTO @FResult
SELECT CASE
WHEN @WorkingString = '' THEN NULL
ELSE @WorkingString
END
SET @String = SUBSTRING(@String, LEN(@WorkingString) + 2, LEN(@String))
END
IF ISNULL(@Splitter2, '') != ''
BEGIN
DECLARE @OStartLoop INT
DECLARE @OEndLoop INT
SELECT @OStartLoop = MIN(Id),
@OEndLoop = MAX(Id)
FROM @FResult
WHILE @OStartLoop <= @OEndLoop
BEGIN
DECLARE @iString VARCHAR(4000)
DECLARE @iMId INT
SELECT @iString = SValue+@Splitter2,
@iMId = Id
FROM @FResult
WHERE Id = @OStartLoop
WHILE CHARINDEX(@Splitter2, @iString) > 0
BEGIN
DECLARE @iWorkingString VARCHAR(4000) = NULL
SET @IWorkingString = SUBSTRING(@iString, 1, CHARINDEX(@Splitter2, @iString) - 1)
INSERT INTO @SResult
SELECT @iMId,
CASE
WHEN @iWorkingString = '' THEN NULL
ELSE @iWorkingString
END
SET @iString = SUBSTRING(@iString, LEN(@iWorkingString) + 2, LEN(@iString))
END
SET @OStartLoop = @OStartLoop + 1
END
INSERT INTO @Result
SELECT MId AS PrimarySplitID,
ROW_NUMBER() OVER (PARTITION BY MId ORDER BY Mid, Id) AS SecondarySplitID ,
SValue
FROM @SResult
END
ELSE
BEGIN
INSERT INTO @Result
SELECT Id AS PrimarySplitID,
NULL AS SecondarySplitID,
SValue
FROM @FResult
END
RETURN
용법:
--FirstSplit
SELECT * FROM uft_DoubleSplitter('ValueA=ValueB=ValueC=ValueD==ValueE&ValueA=ValueB=ValueC===ValueE&ValueA=ValueB==ValueD===','&',NULL)
--Second Split
SELECT * FROM uft_DoubleSplitter('ValueA=ValueB=ValueC=ValueD==ValueE&ValueA=ValueB=ValueC===ValueE&ValueA=ValueB==ValueD===','&','=')
가능한 사용법 (각 분할의 두 번째 값을 얻음) :
SELECT fn.SValue
FROM uft_DoubleSplitter('ValueA=ValueB=ValueC=ValueD==ValueE&ValueA=ValueB=ValueC===ValueE&ValueA=ValueB==ValueD===', '&', '=')AS fn
WHERE fn.mid = 2